Firefighter 1 Part 25 Exam
Questions and Answer 100% PASS
When using a fire extinguisher, always approach the fire:—ANSWER-with an exit behind you
Class C fires can be extinguished using:—ANSWER-multipurpose dry chemicals
Class K fires involve:—ANSWER-high temperature cooking oils, such as vegetable or animal
oils and fats
What factors should be considered when selecting a fire extinguisher?—ANSWER-The fuel
The National Fire Protection Association (NFPA) requires portable fire extinguishers be
inspected at least --------- to ensure that they are accessible and operable.—ANSWER-once a
year
The greatest concern associated with selecting too small of an extinguisher is that:—
ANSWER-the operator has to get closer to the fire
Clean agents are:—ANSWER-gases that do not conduct electricity or leave a residue and are
nonvolatile
Pump tank extinguishers are used to apply:—ANSWER-water
Water type extinguishers exposed to weather below 40 degrees require ------- to be
added.—ANSWER-ant-freeze
, Regular dry chemicals (sodium bicarbonate-based and potassium based) work on ---------
fires.—ANSWER-Classes B and C
What extinguishing agents are being replaced because they have been banned for
destroying the Earths ozone layer?—ANSWER-Halons or halogenated hydrocarbons
What residue does a CO2 fire extinguisher leave when discharged?—ANSWER-None
The use of halon agents is strictly controlled because it:—ANSWER-damages the ozone layer
What is the relationship between dry powder and dry chemical extinguishing agents?—
ANSWER-They are entirely different substances with entirely different applications.
The acronym for the four step process for proper use of fire extinguishers is:—ANSWER-PASS
The first step for using a fire extinguisher is to:—ANSWER-pull the pin
What class of fire involves combustible cooking media, such as oils and grease?—ANSWER-
Class K
A loaded-stream fire extinguisher:—ANSWER-prevents freezing by adding an anti-freezing
agent
The Aqueous Film Forming Foam (AFFF) portable fire extinguishers use what means for
expelling their contents?—ANSWER-Compressed air
A phenomenon that occurs when mixtures of alkaline-based chemicals and certain cooking
oils come into contact resulting in the formation of a soapy film is called:—ANSWER-
saponification
What is the term for water-soluble flammable liquids such as alcohols, acetone, and
others?—ANSWER-Polar solvents
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Brittie Donald
Questions and Answer 100% PASS
When using a fire extinguisher, always approach the fire:—ANSWER-with an exit behind you
Class C fires can be extinguished using:—ANSWER-multipurpose dry chemicals
Class K fires involve:—ANSWER-high temperature cooking oils, such as vegetable or animal
oils and fats
What factors should be considered when selecting a fire extinguisher?—ANSWER-The fuel
The National Fire Protection Association (NFPA) requires portable fire extinguishers be
inspected at least --------- to ensure that they are accessible and operable.—ANSWER-once a
year
The greatest concern associated with selecting too small of an extinguisher is that:—
ANSWER-the operator has to get closer to the fire
Clean agents are:—ANSWER-gases that do not conduct electricity or leave a residue and are
nonvolatile
Pump tank extinguishers are used to apply:—ANSWER-water
Water type extinguishers exposed to weather below 40 degrees require ------- to be
added.—ANSWER-ant-freeze
, Regular dry chemicals (sodium bicarbonate-based and potassium based) work on ---------
fires.—ANSWER-Classes B and C
What extinguishing agents are being replaced because they have been banned for
destroying the Earths ozone layer?—ANSWER-Halons or halogenated hydrocarbons
What residue does a CO2 fire extinguisher leave when discharged?—ANSWER-None
The use of halon agents is strictly controlled because it:—ANSWER-damages the ozone layer
What is the relationship between dry powder and dry chemical extinguishing agents?—
ANSWER-They are entirely different substances with entirely different applications.
The acronym for the four step process for proper use of fire extinguishers is:—ANSWER-PASS
The first step for using a fire extinguisher is to:—ANSWER-pull the pin
What class of fire involves combustible cooking media, such as oils and grease?—ANSWER-
Class K
A loaded-stream fire extinguisher:—ANSWER-prevents freezing by adding an anti-freezing
agent
The Aqueous Film Forming Foam (AFFF) portable fire extinguishers use what means for
expelling their contents?—ANSWER-Compressed air
A phenomenon that occurs when mixtures of alkaline-based chemicals and certain cooking
oils come into contact resulting in the formation of a soapy film is called:—ANSWER-
saponification
What is the term for water-soluble flammable liquids such as alcohols, acetone, and
others?—ANSWER-Polar solvents
© 2026 Copyright. All Rights Reserved. This document is
protected by copyright law, Copyrighted By Brittie Donald
